Video Description Racing crankshaft HPC MK2 Stage6 for Minarelli verticalHigh-quality tuning parts from Stage6: Stage6 Crankshaft HPC MKII piston pin=12mm Yamaha BW's (Minarelli vertical), perfect complement for racing cylinders with 12mm piston pin. The MK2 High Primary Compression (HPC) crankshaft is the second generation HPC crankshaft from tuning specialist Stage6 and is designed for tuned engines, ranging from lightly tuned sport to high performance racing set-ups.Features HPC crankshaftThe high-quality crankshaft is completely made of metal; the counterweight inserts are made from metal as well. This ensures excellent balancing and stability even at the highest rpms. The connecting rod is forged which provides strength and reliability far surpassing any cast part.This MK2 HPC crankshaft was built for tuning and racing set-ups, starting at 50cc and going up to 70cc. It can even be used for 70cc high-end engines.Technical data Tuning Crankshaft HPC MK 2connecting rod: originalstroke: original (39mm)piston pin: 12mmsmall end bearing: 12x17x15mmmaximum speed: 16,000rpmproduct range: racing / high-end racingAttention: The crankshaft can only be used in combination with racing cylinders with 12mm piston pin! Questions about the product

• Brand: Stage6
• SKU: S6-8016805/12
• Availability: In stock

Notes and Safety Stage6 HPCThe HPC crankshafts from Stage6 are the brand's racing crankshafts. There are versions with standard stroke and with long stroke, the HPC shafts are available for both 50cc motorcycles and scooters.HPC crankshaft performanceThe HPC crankshaft (HPC for High Primary Compression) is very robust and also suitable for high RPMs, e.g. in combination with the Stage6 Big Racing cylinder.Made entirely of metal (no plastic inserts)Precise balancingForged connecting rodSuitable for sport to racing setupsSupplied without crankshaft bearings. Please also remember to get the necessary tools, e.g. a flywheel puller.How to change a crankshaft?The crankshaft is one of the main comp